http://www.virginmobile.co.uk/promo/duoSim.html

A FREE SIM, JUST LIKE THAT
With £5 free airtime!
Get your mitts on a Virgin Mobile Pay As You Go SIM card – absolutely free. All you have to do is pop your details into the box below and we’ll send one out, free of charge. It’s that simple. What’s more, we’ll even throw in £5 airtime to get you started.

HOW DOES IT WORK?
Any UK resident can apply for a free SIM, but you’re only allowed 1 application per household and the offer is subject to availability – once they’re gone, they’re gone! Delivery is completely free and if you are successful your SIM should arrive within 2 weeks of your application.

WHAT ELSE DO I GET?
£5 free airtime on your SIM, for starters
Great value calls and texts.
Award winning service
Plus, start earning rewards and get money off your next phone